Or could use the Fn button for something else useful and make a bracketing MySet and assign it to an unused Mode dial spot.

Just like the E-PL5 I would expect the E-P5 to also have the single press HDR bracketing feature, where one shutter press delivers any of menu selectable 3 shots at 2 ev, 5 at 2 ev, 7 at 2 ev, 3 at 3 ev, or 5 at 3 ev.

Sensible setup of MySets to Mode dial makes many menu/SCP dives a thing of the past.